Book/Report

FZJ-2016-06873

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Entwicklungsstand der leitprobenfreien Elementanalyse in der Funken-Massenspektrometrie mit Niedervolt-Vakuumbogenentladung und automatischer Fotoplattenauswertung

Radermacher, L.FZJ* ; Beske, H. E.FZJ*

1978
Kernforschungsanlage Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/13039

Report No.: Juel-Spez-0007

Abstract: With an automatic photoplate-evaluation system in Spark-Source Mass Spectrometry, complete photoplate information is used for the concentration-procedure, that means, all isotopes of single and multiple-chargedions contribute to the analytical result. Experiments show that the ion-intensities of elements in their ionization states lie on parabolas. The parabola-position of impurity-elements within a matrix is mainly influenced by that matrix and shows a characteristic relation to the analytical result. Systematic investigations lead to a significant parameter, the so-called "mean charge number" Zi, which forms a common link between the very different parabola-positions of all elements within a matrix. This knowledge is the basis for a new evaluation procedure which, without using a calibration standard,leads to an essential improvement of the analytical result. Experiments in practical analysis work show that this method, used on many different matrices, show a maximum deviation from the certificate value by a factor of 2 (in many cases < 1.5). Analyzing the main components in alloys yields accuracies between 10 and 20%. For the standard-deviation of analysis results an upper limit of 10% was reached. The knowledge of the common Zi makes it possible, that also elements with a small amount of detected states of charge may be integrated within the normal determination of concentration. The appendix shows the detailed description of computer programs already applied for practical analysis work.

---

Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000 ; Retrocat)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

---

Database coverage:

---